baber/WOPTO huggingface dataset:
Patent GB-2266549-A (GB)
Title: Pressure converter
Inventor: HORVEI KNUT V
IPC: E21B7/18
Filed: 1993-05-17
Abstract: Pressure converter for mounting above the drill bit at the lower end of a drill pipe for deep drilling, comprising drive means adapted to be driven by the drilling fluid flow and to move valve means (27) controlling piston means (6) for reciprocating movement with a pressure stroke and a return stroke. Said valve means has the form of a rotatable valve body (27) the axis of rotation of which is parallel to or coincident with the axis of the piston means, and which is arranged in a top cover (22) above the space (21) in front of the large piston area (11). The valve body (27) has a diametrical through passage (27B) and a central opening (27C) from the passage into the piston space (21). The top cover (22) has inlets (34-34) and outlets (35-35) respectively, being pairwise diametrically opposed and adapted to communicate with the passage (27B) in different angular positions of the valve body (27).
Patent GB-2266183-A (GB)
Title: Semiconductor device
Inventor: LEWIS MEIRION FRANCIS
IPC: H01L29/205
Filed: 1993-06-17
Abstract: A semiconductor device in the form of a metal insulator field effect transistor (MISFET) (200) is constructed as a heterostructure of narrow bandgap In1-xAlxSb semiconductor materials. The MISFET (200) is formed from four semiconducting layers (112 to 118) arranged in series as follows: a heavily doped p-type first layer (112), a heavily doped relatively wider bandgap p-type second layer (114), a lightly doped p-type third layer (116) and a heavily doped n-type fourth layer (118). A source (202) and a drain (204) are formed in the fourth layer (118) and a gate (116/205) in the third layer. An n<+>p<-> junction (124) is formed between the third and fourth layers and a p<+>p<-> junction (122) between the second and third layers. The second layer (114) provides a conduction band potential energy barrier to minority carrier (electron) flow to the gate (116/205), and is sufficiently wide to prevent tunnelling of minority carriers therebetween. The first and second layers (112, 114) in combination provide a p<+>p<+> excluding contact to the third layer (116). The n<+>p<-> junction (124) between the third and fourth layers (116, 118) is an extracting contact; when reverse biased in operation, this junction (124) extracts minority carriers from the region of the third layer (116) adjacent the collector (118/204). In operation, the third layer (116) incorporating the gate (205) becomes depleted of charge carriers and therefore exhibits greatly reduced leakage current. In consequence, the MISFET (200) has good dynamic range in terms of controllable drain current. The invention also provides bipolar transistors (300, 400) and related devices.
Patent GB-2268422-A (GB)
Title: Dewatering of mineral suspensions
Inventor: MOODY GILLIAN MARY
IPC: C02F11/123
Filed: 1993-07-08
Abstract: An aqueous mineral concentrate having a solids content of 200 to 600 grams per litre is flocculated with a polymeric anionic flocculant formed from ethylenically unsaturated monomers comprising sulphonic monomer and the flocculated suspension is dewatered by means of a pressure belt filter. The flocculant type used appears to give a floc structure that is particularly suited to pressure belt filtration. A preferred anionic flocculant polymer is a copolymer of the sodium salt of acrylamido methyl propane sulphonic acid (AMPS) and acrylamide. Preferred flocculant polymers have intrinsic viscosity of at least 8dl/g.
Patent GB-2281350-A (GB)
Title: Four-stroke engine rotary valve gear
Inventor: MARSHALL ROBERT GEOFFREY
IPC: F02B75/02
Filed: 1993-08-24
Abstract: The valve casing 2 comprises three ports 12, 14 and 16 that are radially disposed relative to the axis of valve rotor rotation. A pair of rotors 1 (Fig. 16) may control communication between the inlet and exhaust (15, 17) and the cylinder (13) with the piston crown shaped to be adjacent the rotors at top dead centre. The rotor recess may provide communication between the inlet and exhaust at top dead centre on the power stroke. <IMAGE>
Patent GB-2271881-A (GB)
Title: Colour display tube having a shadow mask
Inventor: GIJRATH JOHANNES HENRICUS NICO
IPC: H01J29/07
Filed: 1993-09-29
Abstract: A colour display tube having a shadow mask 12 in a supporting frame 20. The supporting frame comprises at least two sides 22 which bend when the temperature increases. This causes the distance between the shadow mask and the display screen to change. An improvement of "overall doming" is possible. In one form shown the frame sides have slots 41 to provide bending points 43 and the shadow mask which has a different expansion coefficient is attached to the frame on both sides of each slot. In addition, the frame may be suspended on resilient or bimetal stripes to move in a temperature dependant manner. <IMAGE>
Patent GB-2271096-A (GB)
Title: An overturning device in machinery for wrapping gro ups of commodities
Inventor: CINOTTI ANDREA
IPC: B65G47/252
Filed: 1993-09-29
Abstract: Rolls of paper (2) are overturned by a device (3) composed of a first conveyor belt (5) interposed between and occupying the same plane as a feed station (1) and a wrapping station (4), and running at a velocity (V1) comparable to the velocity (V) of the feed station (1), also a flexibly resilient belt (6) disposed facing the first belt (5), looped over a pair of wheels (7, 8) of which one is power driven; the resilient belt is positioned with one end adjacent to the feed station, separated from the first belt (5) by a distance equivalent to the diameter of the single roll (2) when disposed with its axis (X) parallel to the first belt (5), and set in motion at a velocity of which the horizontal component (V2) is greater than the velocity (V1) of the first belt (5) in such a way that the roll (2) will be taken up, rotated through a right angle and positioned with the axis (X) perpendicular to the first belt (5). <IMAGE>
Patent GB-2282987-A (GB)
Title: Box forming machine with exchangable components
Inventor: HUBBARD DIANE
IPC: B31B1/00
Filed: 1993-10-15
Abstract: A machine (2) for performing operations on cardboard or the like blanks (26) (e.g. making cartons) has a plurality of separate components (8) arranged to operate on such blanks (26) as they are conveyed through the machine (2). The components (8) are securely mountable on a support member (14) which, with the components (8) mounted thereon, is arranged to be removably mounted on the machine (2). A number of support members with components set up for various sizes and configuration of blanks may be kept for use when required. <IMAGE>
Patent GB-2284453-A (GB)
Title: Double-acting anti-backlash gearing system
Inventor: YANG TAI HER
IPC: F16H55/24
Filed: 1993-12-02
Abstract: The present invention relates to a double acting type dynamic back spacing removed driving system which comprises a non-reversible transmission worm gear and worm set including two sets of worms coupling with a worm gear. When the system is driven, one prime worm continues applying rotary driving force, and whether or not the worm gear is driven, such force continues to engage the prime work permanently. A second prime worm is to control displacement and also couples with another worm gear (or is co-axially secured to the respective worm gear with the same or different pitch). Due to the different driven speeds of the two sets of worms when rotating in opposite directions, a tensive state is produced between the threads of the two sets of worms and the worm wheel and back-lash is eliminated. On rotation in one direction, one set of worms is driven faster and the other set is driven more slowly. When the direction is reversed, the respective speeds of the sets of worms are also reversed. The speed difference in either direction of rotation is taken up by one set of torsion limiting transmission devices so that back lash is eliminated. <IMAGE>
Patent GB-2274024-A (GB)
Title: Angle sensor potentiometer for use in wheel alignment measuring system
Inventor: GROSSART PETER SIMPSON KIRKWOO
IPC: H01C10/34
Filed: 1993-12-15
Abstract: A wheel alignment measuring system incorporates an angle sensor potentiometer (23) in which two pairs 38, 39 of independently rotatable wiper contacts are provided, one pair 38 being rotatable with an upper shaft and the other pair 39 being rotatable with a lower shaft, each pair of wiper contacts 38, 39 having one contact 42, 43 connected to a common single resistance track 40 and also has another contact 44, 45 connected to a respective part of a split collector track 41 of the potentiometer 23. The angle sensing potentiometer is used on a front wheel measuring unit (21, 22 Fig. 1 not shown) of a wheel alignment measuring system in which a pair of elastic side cords and a transversely extending elastic front cord are permanently provided throughout use of the system. The angle sensor potentiometer enables readings to be taken selectively of the angular position of either rearwardly projecting tracking arms (29 Fig. 1) connected to the side cords or of toe tracking arms (32, 33 Fig. 1) extending towards each other and linked by the elastic front cord. The system can be manually or computer controlled and reduces the skill and labour required to complete all the measurements required for wheel alignment. <IMAGE>
Patent GB-2272319-A (GB)
Title: coin validation
Inventor: ALLAN RICHARD DOUGLAS
IPC: G07D5/00
Filed: 1994-01-26
Abstract: A method of validating coins comprises deriving at least first and second measurements of a tested coin in dependence on the change from an idling value of a respective parameter to the parameter value when a coin is being measured; determining whether a point corresponding to said first and second measurements lies within an acceptance region corresponding to said particular coin type in the co-ordinate system defined by axes corresponding to said first and second measurements, said acceptance region having a non-planar boundary; and producing a signal indicating that a coin of that type has been tested if said point lies within said acceptance region. As described a value is derived as a non-linear function of the measurements and is compared with an acceptance criterion.
Patent GB-2286755-A (GB)
Title: Ozone generator combined with a decorative tree
Inventor: HUNG CHING HO
IPC: F24F3/16
Filed: 1994-02-15
Abstract: A decorative tree with an electronic air purifier including a pot 8 provided with an opening at the bottom, a trunk 1 having a lower end fixedly mounted in said pot 8, an artificial lawn 3 mounted on the top of said pot, a flexible cane 2 twisted on the trunk 1, a container 7 fixedly mounted in said pot 8 and formed at the bottom with a tubular portion adapted to be received in the opening of said pot, a cover 70 adapted to engage the top of said container 7, an ozone generator 6 disposed within said container 7, a high frequency and high voltage circuit 4 disposed within said container 7 and electrically connected with said ozone generator 6, an air compressor 5 disposed within said container and electrically connected with said high frequency and high voltage circuit 4 for forcing air to flow through said ozone generator 6, and a switch 14 electrically connected with said high frequency and high voltage circuit 4. <IMAGE>
Patent GB-2282070-A (GB)
Title: Implantable penile prosthesis
Inventor: LIM SEUNG-HYUN
IPC: A61F2/26
Filed: 1994-04-08
Abstract: The prosthesis comprises an anchoring means (1) for implanting under the skin of the lower abdomen, engaging means (6) to be implanted for engaging a distal region of the penis and a telescopic member (3, 4) coupling the anchoring means (1) to the engaging means (6). The telescopic member (3, 4) may be extended or retracted according to erection or shrinkage of the penis and is capable of repeated plastic deformation. It is provided with a plurality of radial holes (5) to allow the egress of bodily fluids during collapse. The ability of the telescopic member to be repeatedly deformed means that the patient can arrange his penis as appropriate for the current social situation. <IMAGE>
Patent GB-2282330-A (GB)
Title: Golf aid
Inventor: JACOB ROBERT CHARLES
IPC: A63B57/00
Filed: 1994-10-03
Abstract: A golf aid is provided with a golf club alignment face 2 to ensure that the club face is square to the intended direction of travel of the ball, a viewing alignment device 5a, 5b to assist the golfer to maintain his head in a plane behind the ball, and a direction indicator 4 to ensure that the ball is lined up with the target. Optionally, the aid may also comprise a pitch mark fork, or pitch mark repairer. <IMAGE>
Patent GB-2287826-A (GB)
Title: Removal of native oxide from silicon surfaces
Inventor: KIKUCHI JUN
IPC: H01L21/3065
Filed: 1995-03-17
Abstract: A method of manufacturing a semiconductor device comprising the steps of: (a) processing a substrate by HF vapor and H2O or alcohol vapor; (b) applying an excitation energy to a flow of gas containing hydrogen and exciting the gas containing hydrogen into a plasma state; (c) adding gas containing nitrogen fluoride (NF3) to the gas containing hydrogen at a more downstream position than the plasma. In use a silicon substrate processed by step (a) is further processed by using a gas mixture comprising a hydrogen gas containing hydrogen radicals and nitrogen fluoride thereby providing an oxide free hydrogen terminated surface. Manufacturing apparatus for performing the invention is also disclosed (Figure 10). <IMAGE>
Patent GB-2289865-A (GB)
Title: Laminated docu ments
Inventor: SHEPHERD PAUL
IPC: B42D15/10
Filed: 1995-05-11
Abstract: A continuous web of printable material such as card 10 has individual sections within which pairs of adjoining portions 16, 18 are defined. On one face, a release agent has been applied over one portion 16 and adhesive plastics film (20 Fig. 2) has been applied over both portions, adhering peelably to the first portion (16) and permanently to the second portion 18. The web 10 is cut so that a blank consisting of the two portions 16, 19 and overlying film (20) is removable, and the first portion is separable from the second portion. For use, the exposed face of the second portion 18 is personalised, e.g. by application of a photograph and a signature. The first card portion 16 is then peeled from the film (20) which is folded over and adhered over the personalised face, thus producing a laminated card with plastics film bonded to both faces. <IMAGE>
Patent GB-2291308-A (GB)
Title: Error diffusion image encoding
Inventor: KIM JAE-HO
IPC: H04N1/405
Filed: 1995-07-14
Abstract: Disclosed is a image processing system for displaying pixel data on a screen. In the method for binary-encoding the image information, a currently processed pixel is discriminated according to whether it is involved in normal or edge regions of the image, and the binary-encoding of the pixel information is performed in accordance with the discrimination, as is the determination of a corresponding error value. According to the method, unpleasant bars to the eye can be removed on a screen and therefore an image quality with good edge sharpness can be obtained. <IMAGE>
Patent GB-2291362-A (GB)
Title: Orthopaedic apparatus
Inventor: FERRATI BENITO
IPC: A61F5/01
Filed: 1995-07-20
Abstract: An orthopaedic apparatus for the walking and rehabilitation of disabled persons comprises a compressed air or hydraulically operated semi-rigid sling for supporting the bust and lower limbs of the patient together with a wheeled framework designed as a stable rest and support for the user which carries the fluid delivery means. <IMAGE>
Patent GB-2296298-A (GB)
Title: Sliding bearing
Inventor: NEGWER BERND
IPC: F16C33/04
Filed: 1995-11-22
Abstract: A radial or axial sliding bearing comprises a circle of sliding members (10, 14) with a hydrodynamic liquid wedge between their contact surfaces (10.2, 14.2) on the one hand and a counterpressure contact surface (28, 26) on the other hand. The contact surfaces (10.2, 14.2) are formed by small ceramic plates (34) which are of fibre-reinforced ceramic material. The ceramic plates are glued or soldered to a base member (10.1, 14.1) of each sliding member (10, 14) on the side of the plate remote from the contact surface (10.2, 14.2). The base members are of a substantially softer material than the ceramic plates. The counterpressure contact surface may comprise a ceramic layer sprayed onto a support member (4). <IMAGE>
Patent GB-2297718-A (GB)
Title: Drive for distributor rollers in an inking unit of a rotary printing machine
Inventor: KELM CARSTEN
IPC: B41F31/15
Filed: 1996-02-08
Abstract: The drive comprises a central gearwheel (2,4) driven by a printing-unit cylinder, via a gear (3), and distributor rollers (6) the drive gears of which are in mesh with the central gearwheel. Each of the distributor rollers performs a lateral stroke, and the central gearwheel is provided with the possibility of adjusting the timing point of starting the lateral stroke with respect to the front end of the printing plate, and thus influencing the inking of the printing plate according to the respective subject to be printed. The gearwheel (4) is supported on a central journal (15) which is rotatable by a servomotor (29) and gearing (28,27,26), in order that the timing point may be adjusted. A planetary gear (21,22) is carried by the journal (15) and meshes with both parts (2,4) of the central gearwheel. Axial movement of the journal (15), together with a plate (30), is controlled by a cylinder (35).
Patent GB-2311203-A (GB)
Title: Edible product produced from bread crust material
Inventor: SMITH BRIAN JOHN
IPC: A21D8/02
Filed: 1996-03-22
Abstract: The invention provides a process for treating bread crust material (12) to provide a human food or other edible product, comprising applying a wetting material (15) to bread crust material, forming the wetted crusts into a sheet (17) or sheets of crust material, cutting and shaping as required the or each sheet to form the product (19) and drying the product to preserve its shape. A food product produced from bread crust material in the manner described can provide an edible base or container for other foods which can be eaten cold or reheated in a conventional or microwave oven. Alternatively, the treated bread crust material may provide an edible utensil for eating other foods.
Patent GB-2320175-A (GB)
Title: A food preservative
Inventor: BAINES DAVID A
IPC: A23B4/16
Filed: 1996-12-16
Abstract: The invention relates to a sulphur dioxide-releasing preservative (e.g. a sulphite) which is coated with an edible material and a method of making such coated preservatives. The coated preservative provides a way of increasing the shelf life of foodstuffs to which the preservative is added compared to the shelf life of the product to which the uncoated preservative is added.
Patent GB-2322165-A (GB)
Title: Radial movement limitation in a gas turbine engine shaft
Inventor: RICHARDS MARTYN
IPC: F16C35/077
Filed: 1997-02-15
Abstract: A gas turbine engine has a shaft 16 normally co-axial with the longitudinal axis 15 of the engine which shaft is supported by a bearing 18 which is in turn supported by the fixed structure 25 of the engine through a frangible connection 26, two limiting means 30, 36 being provided at different radial distances from the longitudinal axis of the engine to limit the radial movement of the shaft in the vicinity of the bearing following fracture of the frangible connecting means. The shaft may be the fan shaft of a ducted fan gas turbine engine and the fracture may be caused by imbalance in the fan following blade loss, the limiting means altering the natural frequency of the vibration of the fan. The radial movement may be limited by the limiting means radially furthest from the axis at first and subsequently by the other limiting means. A radially outward surface 29 of the outer race 20 of the bearing may engage with the movement limiting means. The two limiting means may be axially spaced and at last part of the bearing may be axially translatable, moved by load means 33.
Patent GB-2324290-A (GB)
Title: Tea bag with pocket for spoon
Inventor: COOPER WILLIAM RICHARD
IPC: B65D81/00
Filed: 1997-04-18
Abstract: A tea bag has an ancillary pocket 2 suitable to receive the bowl 3 of a spoon whereby the bag can be manipulated during use in a cup or mug. The pocket 2 is formed by an extra ply of the same or a different material to that of the rest of the bag. The bag and the pocket can be round, square or of other shapes. For teapot use, bags may be merely dropped into the pot.
Patent GB-2321414-A (GB)
Title: Toy vehicle with integral ball playing apparatus
Inventor: POLUMBAUM DOUGLAS
IPC: A63H17/00
Filed: 1997-05-12
Abstract: A toy vehicle has an object projecting apparatus 24 mounted on a chassis 12 and enclosed by a removable body or cover 20. The object projecting apparatus 24 includes a spring loaded arm 34 and a catch and release mechanism. The spring loaded arm 34 can be shaped like a baseball bat or have a hand or shoe for hitting, throwing or kicking a ball. The catch and release mechanism preferably has several spaced apart movable tabs (72 Figure 5) which selectively engage a catch tab (70) on the arm. This allows the spring loaded arm 34 to be releasably held at one of several positions so that when released the arm will strike or throw a ball at different forces, each force corresponding to the selected position.
Patent GB-2325530-A (GB)
Title: Liquid crystal device
Inventor: WALTON HARRY GARTH
IPC: G02F1/1337
Filed: 1997-05-22
Abstract: A liquid crystal device has a substrate 10 with first and second alignment layers 12 and 14 thereon. The first alignment layer 12 is unidirectionally aligned. The second alignment layer 14 is a layer formed of a cured twisted reactive mesogen composition which is patterned by masking, curing and dissolving uncured regions of the layer 14 so as to expose first alignment regions 20 defined by the layer 12 and to leave second alignment regions 22 in the layer 14. The first alignment regions 20 have a different alignment direction to that of the second alignment regions 22. A liquid crystal layer 24 is provided over the resultant alignment layer structure.
Patent GB-2314863-A (GB)
Title: Dual action valve for wellbore testing
Inventor: RYTLEWSKI GARY
IPC: E21B34/10
Filed: 1997-06-11
Abstract: A valve 10 for use downhole in a wellbore can be repeatedly opened and closed any number of times in response to a pressure signal transmitted down the annulus of the wellbore. The valve has a port 16 which is opened and closed by movement of a mandrel 20,22. The mandrel 22 is formed with a piston 36 which is subjected on one side to a reference pressure in chamber 56 and on the other side to annulus pressure via port 18 and floating piston 44. When the annulus pressure exceeds the reference pressure in chamber 56 by an amount sufficient to shift a collet 30 from groove 28 the mandrel moves upwardly to close the port 16 and collet 30 enters groove 26. At the end of the stroke of the mandrel 22 a hydraulic circuit 12, including passages 54,62 and check valves 52,62, causes the increased annulus pressure to be trapped in the chamber 56 as the new reference pressure. When the annulus pressure is subsequently reduced to a value below that of the new reference pressure sufficient to move collet from groove 26 the mandrel 20,22 moves downwardly to open port 16, the lower annulus pressure being trapped in chamber 56 at the end of the stroke. This process can then be repeated any number of times.